BLE Idea - netWork Access Control Token

BLE (Bluetooth Low Energy) is good for Key application.

Example : 1.Real Lcok use BLE and iPhone as Key

http://www.core77.com/blog/object_culture/lockitron_project_sidesteps_kickstarter_gets_massive_funding_23586.asp

So I propose an idea. That use a BLE Token that contain the network access password and usage time. So parent can write the data into the Token and Child can use the Token to tune on the network.